Which of the following is a preferential agreement?

Ken and Daniel always eat miso soup and sushi in exact proportions: Ken eats two miso per one sushi; Daniel eats one miso per one sushi. They throw away any extra soup or sushi as it would not give them any pleasure. Once, they were stuck in the office together for hours, marking students' assignments. Ken had one miso soup and 9 sushi with him; Daniel had 9 miso and one sushi. (For the purpose of this question, assume that miso and sushi can be divided into little pieces, so one-half miso or one-hundredth of sushi makes sense) a) Draw the Edgeworth box for Ken and Daniel. Please put Ken at the origin and Daniel "upside down"; put miso on the horizontal axis and sushi on the vertical one. Show their endowment point. b) Show all Pareto optimal allocations of miso and sushi between Ken and Daniel in the Edgeworth Box. You can use the graph from a). Please note that this question is a bit tricky, though not difficult. Draw a bunch of indifference curves and look for "tangencies".

How do I find opportunity cost

You have two options for how to spend the afternoon. You can either go see a movie with your roommate or work as a tutor for the Math Department. From experience, you know that going to see a movie gives you $20 worth of enjoyment, and with your student discount, a movie ticket only costs $12. If you spend the afternoon working as a math tutor, you will get paid $45. On a typical day, you wouldn't be willing to spend the afternoon working as a math tutor for less than $35. What is your opportunity cost of seeing a movie this afternoon? Select one: O a. $57 O b. $12 ○ c. $22 ○ d. $8